A properly installed window AC ensures efficient cooling, quiet operation, and safety. Follow these steps to get it right:

Steps for Installing a Window AC

1. Read the Instructions

• Every AC model has specific requirements.
• Always follow the manufacturer’s guidelines and use the included hardware.

2. Make Sure It Works

• Remove all packaging materials like foam blocks and tape.
• Test the unit on the floor before installation to ensure functionality.

3. Attach the Side Panels

• Connect the accordion-style panels to the sides of the AC.
• If provided, attach the metal rail to the top of the unit to help secure it in the window.

4. Position the AC in the Window

• Raise the window sash and place the AC in the window.
• Center it on the sill, ensuring a firm grip as most of the weight hangs outside.
• Pull the window sash down to hold the AC securely.
• Consider a support bracket ($30–$100) for added safety, especially in upper-floor apartments.

5. Ensure Proper Drainage

• For slanted drain pans: Keep the AC level.
• For other models: Slightly tilt the AC outward to let water drain away from your home.
• Use a level or place a ball on the AC to ensure the correct angle.

6. Lock It In

• Use the provided sash lock (L-shaped bracket) to secure the window.
• For vinyl windows, use a snug block of wood or a dowel to prevent the window from opening.

7. Seal Gaps

• Extend the side panels fully and screw them to the window sash.
• Fill gaps around the AC with foam weather stripping to keep out hot air and insects.
• If provided, cut and attach insulating foam panels over the accordion panels to improve efficiency and reduce noise.

Additional Tips for Success

• Safety First: Use a support bracket if the AC is heavy or if you’re on an upper floor.
• Efficiency: A well-sealed unit improves cooling and saves energy.
• Noise Control: Proper sealing reduces operational noise.

Now you can enjoy cool comfort all summer long!

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